Jar-closure.



PATENTED APR. 24, 1906.

F. ONEILL' JAR CLOSURE. APPLICATION FILED JUNE10.1905.

JNVE/VTOF? FRANK- O'NEILL.

WITNESSES I jarto effect the closing.

UNITED STATES FATE NT 0 Fh it E.

JAR-CLOSURE.

Specification of Letters Extent.

Patented April 24, 19(16.

Application no June 10.1905. Serial No. 264,684.

To all whom it may concern: I I

Be it known that I, FRANK ONEILL, a citizen of the United States, residing at Detroit, i in the county of Wayne and State of Michi- I gun, have invented certain new and useful I improvements in Jar-Closures, of which the following is a specificatii'in, reference being had therein to the accompanying drawings,

The invention relates to' jar-closures; and i it consists in the novel construction, as herei incite!- set forth.

in Figure lot the drawin s the jar Is rep- :1 resented in vertical longitudinal section, and Fig. 2 is an enlarged view of the joint.

it usual in the constructoin of jar-clo- I sures to seal the joint by an elastic packing or gasket, which is arranged between parallel I laces upon the jar and cover, respectively, the parts being held together by a screw-cap or other clamping means. Closures have I also been formed in which a gasket of round- I ed cross section is arranged to be peripherally compressed between the cover and jar. The objection to the first form is that the joint dependent entirely uponthe clamping means, while the second construction requires a special form of gasket, which is more expensive to manufacture than those commonly in use.

It is the object of the present invention to provide a closure in which the common form of gasket-that is, one which is rectangular in cross-section is employed and in which the sealing is effected by a peripheral compression of this gasket. This permits of dispensing with the clamping means, it being only necessary to press the cover upon the shown, a jar'A, which may be of any suitable construction, is provided at its top with a shoulder B in a substantially horizontal plane, which forms a seat for the gasket C. D is the jar-cover, provided with a peripheral flange E, which has a flaring portion a at its lower end and above this a shoulder 11, which is opposed .to the shoulder B on the jar. Betivecn this shoulder 11 and the flaring portion (L a portion c, which is inclined oppositely to theangle oi the flaring portion a.

With this cmistruction the gasket (J, which is a ring having paralle top and bottom and inner and outer faces, is placed upon the j.ir so as to rest upon the shoulder B, and above his the jar is preferably slightiy recessed at d to receive the inner faces; of the gasket and prevent its accidental disengugenwnt from i tending from seid internal the jar. To close the jar, it is only necessary to press the cover downward, whereupon the inclined face a of the flange will peripherally press the gasket until it is forced into engagement with the oppositely-angling portion of the flange c. By reason of this opposite angle the resiliencyofthe compresseiil gasket Will tend to force the cover downward instead of forcing it upward. Thus the joint is sealed not only between the peripheral contacting points, but also between the upper and lower faces of the gasket and the corresponding faces B and r) on the jar and cover. Furthermore, the atmospheric pressure actin; by reason of the partial vacuum in the jar will tend to hold the cover in position and seal the joint between the lower and upper faces of the gasket. Thus all four faces of the gasket are effective in sealing the jar What I claim my invention is i 1. The combination with a jar and cover aving oppositely-arrangetl parallel faces, of

' a. gasket having its upoer and lower faces respectively contacting said faces on the jar and cover, and a flaring flange on said cover for peripherally compressing said gasket.

2. A jar and cover respectively provided with external and internal opposed faces, an annular gasket having parallel external .and internal surfaces sleeved upon said external face of the jar and of greater width than the space between said face and the opposed face on the cover, a flaring flange upon said cover for peripherally compressing said gasket, and a. shoulder on said jar for holding said asket from longitudinal movement during t 1e peripheral compression.

3. A jar-and cover having opposed external and internal surfaces shoulders, an annular gasket having a substantially rectangular cross-section sleeved upon said external surface of the jar and resting upon the adjacent shoulder, said gasket being of greater width than the space between said j er and the opposed surface of the cover, and a liaring flange on said cover exface, forming a means of peripherally compressing said gasket. A

4. A jar and a cover respectively provided with external and internal opposed faces and adjacent opposed shoulders, said internal face on the cover being inclined to contract downwardly, a sleeved upon said jar and resting upon the anjacent shoulder, and

and opposed adjacent a flaring downwardly-projecting flange- 611 said cover oppositely angled to said internal face, whereby in the depression. of said. cover upon said jar, said flan e will peripherally compress said. gasket an the incline of said internal surface will provide a slight expan-- sion which will retain the cover to the jar.

I In testimony whereof l'affix my signature in presence of two witnesses.

' FRANK GNEILL.

' Witnesses: v

A 'JAMEsv P. BARRY,

EDWARD D. AULT. 

